fix(groups): 用户分组不下发内部路由信息

- 普通用户 Group DTO 移除 model_routing/account_count/account_groups，避免泄露内部路由与账号信息\n- 新增 AdminGroup DTO，并仅在管理员分组接口返回完整字段\n- 前端拆分 Group/AdminGroup，管理端页面与 API 使用 AdminGroup\n- 增加 /api/v1/groups/available 契约测试，防止回归

frontend/src/api/admin/groups.ts

@@ -5,7 +5,7 @@
 
 import { apiClient } from '../client'
 import type {
-  Group,
+  AdminGroup,
   GroupPlatform,
   CreateGroupRequest,
   UpdateGroupRequest,
@@ -31,8 +31,8 @@ export async function list(
   options?: {
     signal?: AbortSignal
   }
-): Promise<PaginatedResponse<Group>> {
-  const { data } = await apiClient.get<PaginatedResponse<Group>>('/admin/groups', {
+): Promise<PaginatedResponse<AdminGroup>> {
+  const { data } = await apiClient.get<PaginatedResponse<AdminGroup>>('/admin/groups', {
     params: {
       page,
       page_size: pageSize,
@@ -48,8 +48,8 @@ export async function list(
  * @param platform - Optional platform filter
  * @returns List of all active groups
  */
-export async function getAll(platform?: GroupPlatform): Promise<Group[]> {
-  const { data } = await apiClient.get<Group[]>('/admin/groups/all', {
+export async function getAll(platform?: GroupPlatform): Promise<AdminGroup[]> {
+  const { data } = await apiClient.get<AdminGroup[]>('/admin/groups/all', {
     params: platform ? { platform } : undefined
   })
   return data
@@ -60,7 +60,7 @@ export async function getAll(platform?: GroupPlatform): Promise<Group[]> {
  * @param platform - Platform to filter by
  * @returns List of groups for the specified platform
  */
-export async function getByPlatform(platform: GroupPlatform): Promise<Group[]> {
+export async function getByPlatform(platform: GroupPlatform): Promise<AdminGroup[]> {
   return getAll(platform)
 }
 
@@ -69,8 +69,8 @@ export async function getByPlatform(platform: GroupPlatform): Promise<Group[]> {
  * @param id - Group ID
  * @returns Group details
  */
-export async function getById(id: number): Promise<Group> {
-  const { data } = await apiClient.get<Group>(`/admin/groups/${id}`)
+export async function getById(id: number): Promise<AdminGroup> {
+  const { data } = await apiClient.get<AdminGroup>(`/admin/groups/${id}`)
   return data
 }
 
@@ -79,8 +79,8 @@ export async function getById(id: number): Promise<Group> {
  * @param groupData - Group data
  * @returns Created group
  */
-export async function create(groupData: CreateGroupRequest): Promise<Group> {
-  const { data } = await apiClient.post<Group>('/admin/groups', groupData)
+export async function create(groupData: CreateGroupRequest): Promise<AdminGroup> {
+  const { data } = await apiClient.post<AdminGroup>('/admin/groups', groupData)
   return data
 }
 
@@ -90,8 +90,8 @@ export async function create(groupData: CreateGroupRequest): Promise<Group> {
  * @param updates - Fields to update
  * @returns Updated group
  */
-export async function update(id: number, updates: UpdateGroupRequest): Promise<Group> {
-  const { data } = await apiClient.put<Group>(`/admin/groups/${id}`, updates)
+export async function update(id: number, updates: UpdateGroupRequest): Promise<AdminGroup> {
+  const { data } = await apiClient.put<AdminGroup>(`/admin/groups/${id}`, updates)
   return data
 }
 
@@ -111,7 +111,7 @@ export async function deleteGroup(id: number): Promise<{ message: string }> {
  * @param status - New status
  * @returns Updated group
  */
-export async function toggleStatus(id: number, status: 'active' | 'inactive'): Promise<Group> {
+export async function toggleStatus(id: number, status: 'active' | 'inactive'): Promise<AdminGroup> {
   return update(id, { status })
 }
 

frontend/src/components/account/BulkEditAccountModal.vue

@@ -648,7 +648,7 @@ import { ref, watch, computed } from 'vue'
 import { useI18n } from 'vue-i18n'
 import { useAppStore } from '@/stores/app'
 import { adminAPI } from '@/api/admin'
-import type { Proxy, Group } from '@/types'
+import type { Proxy, AdminGroup } from '@/types'
 import BaseDialog from '@/components/common/BaseDialog.vue'
 import Select from '@/components/common/Select.vue'
 import ProxySelector from '@/components/common/ProxySelector.vue'
@@ -659,7 +659,7 @@ interface Props {
   show: boolean
   accountIds: number[]
   proxies: Proxy[]
-  groups: Group[]
+  groups: AdminGroup[]
 }
 
 const props = defineProps<Props>()

frontend/src/components/account/CreateAccountModal.vue

@@ -1816,7 +1816,7 @@ import {
 import { useOpenAIOAuth } from '@/composables/useOpenAIOAuth'
 import { useGeminiOAuth } from '@/composables/useGeminiOAuth'
 import { useAntigravityOAuth } from '@/composables/useAntigravityOAuth'
-import type { Proxy, Group, AccountPlatform, AccountType } from '@/types'
+import type { Proxy, AdminGroup, AccountPlatform, AccountType } from '@/types'
 import BaseDialog from '@/components/common/BaseDialog.vue'
 import Icon from '@/components/icons/Icon.vue'
 import ProxySelector from '@/components/common/ProxySelector.vue'
@@ -1862,7 +1862,7 @@ const apiKeyHint = computed(() => {
 interface Props {
   show: boolean
   proxies: Proxy[]
-  groups: Group[]
+  groups: AdminGroup[]
 }
 
 const props = defineProps<Props>()

frontend/src/components/account/EditAccountModal.vue

@@ -883,7 +883,7 @@ import { useI18n } from 'vue-i18n'
 import { useAppStore } from '@/stores/app'
 import { useAuthStore } from '@/stores/auth'
 import { adminAPI } from '@/api/admin'
-import type { Account, Proxy, Group } from '@/types'
+import type { Account, Proxy, AdminGroup } from '@/types'
 import BaseDialog from '@/components/common/BaseDialog.vue'
 import Select from '@/components/common/Select.vue'
 import Icon from '@/components/icons/Icon.vue'
@@ -901,7 +901,7 @@ interface Props {
   show: boolean
   account: Account | null
   proxies: Proxy[]
-  groups: Group[]
+  groups: AdminGroup[]
 }
 
 const props = defineProps<Props>()

frontend/src/components/common/GroupSelector.vue

@@ -42,13 +42,13 @@
 import { computed } from 'vue'
 import { useI18n } from 'vue-i18n'
 import GroupBadge from './GroupBadge.vue'
-import type { Group, GroupPlatform } from '@/types'
+import type { AdminGroup, GroupPlatform } from '@/types'
 
 const { t } = useI18n()
 
 interface Props {
   modelValue: number[]
-  groups: Group[]
+  groups: AdminGroup[]
   platform?: GroupPlatform // Optional platform filter
   mixedScheduling?: boolean // For antigravity accounts: allow anthropic/gemini groups
 }

frontend/src/types/index.ts

@@ -269,14 +269,19 @@ export interface Group {
   // Claude Code 客户端限制
   claude_code_only: boolean
   fallback_group_id: number | null
-  // 模型路由配置（仅 anthropic 平台使用）
-  model_routing: Record<string, number[]> | null
-  model_routing_enabled: boolean
-  account_count?: number
   created_at: string
   updated_at: string
 }
 
+export interface AdminGroup extends Group {
+  // 模型路由配置（仅管理员可见，内部信息）
+  model_routing: Record<string, number[]> | null
+  model_routing_enabled: boolean
+
+  // 分组下账号数量（仅管理员可见）
+  account_count?: number
+}
+
 export interface ApiKey {
   id: number
   user_id: number

frontend/src/views/admin/AccountsView.vue

@@ -187,14 +187,14 @@ import AccountCapacityCell from '@/components/account/AccountCapacityCell.vue'
 import PlatformTypeBadge from '@/components/common/PlatformTypeBadge.vue'
 import Icon from '@/components/icons/Icon.vue'
 import { formatDateTime, formatRelativeTime } from '@/utils/format'
-import type { Account, Proxy, Group } from '@/types'
+import type { Account, Proxy, AdminGroup } from '@/types'
 
 const { t } = useI18n()
 const appStore = useAppStore()
 const authStore = useAuthStore()
 
 const proxies = ref<Proxy[]>([])
-const groups = ref<Group[]>([])
+const groups = ref<AdminGroup[]>([])
 const selIds = ref<number[]>([])
 const showCreate = ref(false)
 const showEdit = ref(false)

frontend/src/views/admin/GroupsView.vue

@@ -1107,7 +1107,7 @@ import { useI18n } from 'vue-i18n'
 import { useAppStore } from '@/stores/app'
 import { useOnboardingStore } from '@/stores/onboarding'
 import { adminAPI } from '@/api/admin'
-import type { Group, GroupPlatform, SubscriptionType } from '@/types'
+import type { AdminGroup, GroupPlatform, SubscriptionType } from '@/types'
 import type { Column } from '@/components/common/types'
 import AppLayout from '@/components/layout/AppLayout.vue'
 import TablePageLayout from '@/components/layout/TablePageLayout.vue'
@@ -1202,7 +1202,7 @@ const fallbackGroupOptionsForEdit = computed(() => {
   return options
 })
 
-const groups = ref<Group[]>([])
+const groups = ref<AdminGroup[]>([])
 const loading = ref(false)
 const searchQuery = ref('')
 const filters = reactive({
@@ -1223,8 +1223,8 @@ const showCreateModal = ref(false)
 const showEditModal = ref(false)
 const showDeleteDialog = ref(false)
 const submitting = ref(false)
-const editingGroup = ref<Group | null>(null)
-const deletingGroup = ref<Group | null>(null)
+const editingGroup = ref<AdminGroup | null>(null)
+const deletingGroup = ref<AdminGroup | null>(null)
 
 const createForm = reactive({
   name: '',
@@ -1529,7 +1529,7 @@ const handleCreateGroup = async () => {
   }
 }
 
-const handleEdit = async (group: Group) => {
+const handleEdit = async (group: AdminGroup) => {
   editingGroup.value = group
   editForm.name = group.name
   editForm.description = group.description || ''
@@ -1585,7 +1585,7 @@ const handleUpdateGroup = async () => {
   }
 }
 
-const handleDelete = (group: Group) => {
+const handleDelete = (group: AdminGroup) => {
   deletingGroup.value = group
   showDeleteDialog.value = true
 }